Cyber security is important to protect networks, computers, programs and data from unauthorized access and cyber attacks which cost businesses billions globally each year. The document discusses factors that influence cyber security costs such as company size, type of sensitive data, security products/services used, and professional audits. It also explains Tanzania's position in the cyber security index, where it ranks 5th among African countries in the "maturing stage" of cyber security commitment and readiness based on its improving legal framework and regulations over the past three years.